<template>
  <div class="page-account">
    <div class="container" :class="[ fullWidth > 768 ? 'containerSamll':'containerBig']">
      <swiper v-if="fullWidth>768" :options="swiperOption" class="swiperPross">
        <swiper-slide v-for="(item,index) in swiperList" :key="index" class="swiperPic">
          <img :src="item.pic" />
        </swiper-slide>
        <div slot="pagination" class="swiper-pagination" />
      </swiper>
      <div class="index_from page-account-container">
        <div class="labelPic">
          <img src="../../assets/images/laber.png" />
        </div>
        <div class="page-account-top">
          <div class="page-account-top-logo">
            <img :src="loginLogo" alt="logo" />
          </div>
        </div>
        <el-form
          ref="loginForm"
          :model="loginForm"
          :rules="loginRules"
          class="login-form"
          autocomplete="on"
          label-position="left"
          @keyup.enter="handleLogin"
        >
          <el-form-item prop="account">
            <el-input
              ref="account"
              v-model="loginForm.account"
              placeholder="用户名"
              prefix-icon="el-icon-user"
              name="username"
              type="text"
              tabindex="1"
              autocomplete="on"
            />
          </el-form-item>

          <el-form-item prop="password">
            <el-input
              :key="passwordType"
              ref="password"
              v-model="loginForm.password"
              :type="passwordType"
              placeholder="密码"
              name="password"
              tabindex="2"
              auto-complete="on"
              prefix-icon="el-icon-lock"
            />
            <span class="show-pwd" @click="showPwd">
              <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
            </span>
          </el-form-item>
          <el-form-item prop="code" class="captcha">
            <div class="captcha">
              <el-input
                ref="username"
                v-model="loginForm.code"
                style="width: 168px;"
                prefix-icon="el-icon-message"
                placeholder="验证码"
                name="username"
                type="text"
                tabindex="3"
                autocomplete="on"
              />
              <div class="imgs" @click="getCaptcha()">
                <img :src="captchatImg" />
              </div>
            </div>
          </el-form-item>
          <el-button
            :loading="loading"
            type="primary"
            style="width:100%;margin-bottom:30px;"
            @click.native.prevent="handleLogin"
          >登录</el-button>
        </el-form>
      </div>
    </div>
    <div v-if="beian_sn" class="record_number">
      <a href="https://beian.miit.gov.cn/">{{beian_sn}}</a>
    </div>
  </div>
</template>

<script>
// +----------------------------------------------------------------------
// | CRMEB [ CRMEB赋能开发者，助力企业发展 ]
// +----------------------------------------------------------------------
// | Copyright (c) 2016~2021 https://www.crmeb.com All rights reserved.
// +----------------------------------------------------------------------
// | Licensed CRMEB并不是自由软件，未经许可不能去掉CRMEB相关版权
// +----------------------------------------------------------------------
// | Author: CRMEB Team <admin@crmeb.com>
// +----------------------------------------------------------------------
import { captchaApi, loginConfigApi } from "@/api/user";
import notice from "@/libs/notice";
import "@/assets/js/canvas-nest.min";
import Cookies from "js-cookie";
export default {
  name: "Login",
  data() {
    const validateUsername = (rule, value, callback) => {
      if (!value) {
        callback(new Error("请输入用户名"));
      } else {
        callback();
      }
    };
    const validatePassword = (rule, value, callback) => {
      if (!value) {
        callback(new Error("请输入密码"));
      } else {
        if (value.length < 6) {
          callback(new Error("请输入不少于6位数的密码"));
        } else {
          callback();
        }
      }
    };
    return {
      fullWidth: document.body.clientWidth,
      swiperOption: {
        pagination: {
          el: ".pagination"
        },
        autoplay: {
          enabled: true,
          disableOnInteraction: false,
          delay: 3000
        }
      },
      captchatImg: "",
      loginLogo: "",
      beian_sn: "",
      swiperList: [],
      loginForm: {
        account: "",
        password: "",
        key: "",
        code: ""
      },
      loginRules: {
        account: [
          { required: true, trigger: "blur", validator: validateUsername }
        ],
        password: [
          { required: true, trigger: "blur", validator: validatePassword }
        ],
        code: [
          { required: true, message: "请输入正确的验证码", trigger: "blur" }
        ]
      },
      passwordType: "password",
      capsTooltip: false,
      loading: false,
      showDialog: false,
      redirect: undefined,
      otherQuery: {}
    };
  },
  watch: {
    $route: {
      fullWidth(val) {
        // 为了避免频繁触发resize函数导致页面卡顿，使用定时器
        if (!this.timer) {
          // 一旦监听到的screenWidth值改变，就将其重新赋给data里的screenWidth
          this.screenWidth = val;
          this.timer = true;
          const that = this;
          setTimeout(function() {
            // 打印screenWidth变化的值
            that.timer = false;
          }, 400);
        }
      },
      handler: function(route) {
        const query = route.query;
        if (query) {
          this.redirect = query.redirect;
          this.otherQuery = this.getOtherQuery(query);
        }
      },
      immediate: true
    }
  },
  created() {
    const _this = this;
    document.onkeydown = function(e) {
      if (_this.$route.path.indexOf("login") !== -1) {
        const key = window.event.keyCode;
        if (key === 13) {
          _this.handleLogin();
        }
      }
    };
    window.addEventListener("resize", this.handleResize);
  },
  mounted() {
    this.getInfo();
    this.$nextTick(() => {
      if (this.screenWidth < 768) {
        document
          .getElementsByTagName("canvas")[0]
          .removeAttribute("class", "index_bg");
      } else {
        document.getElementsByTagName("canvas")[0].className = "index_bg";
      }
    });
    this.getCaptcha();
  },
  beforeCreate() {
    if (this.fullWidth < 768) {
      document
        .getElementsByTagName("canvas")[0]
        .removeAttribute("class", "index_bg");
    } else {
      document.getElementsByTagName("canvas")[0].className = "index_bg";
    }
  },
  beforeDestroy: function() {
    window.removeEventListener("resize", this.handleResize);
    document
      .getElementsByTagName("canvas")[0]
      .removeAttribute("class", "index_bg");
  },
  destroyed() {
    // window.removeEventListener('storage', this.afterQRScan)
  },
  methods: {
    getInfo() {
      loginConfigApi()
        .then(({ data }) => {
          this.swiperList = data.login_banner;
          this.loginLogo = data.login_logo;
          this.beian_sn = data.beian_sn;
          Cookies.set("MerInfo", JSON.stringify(data));
        })
        .catch(({ message }) => {
          this.$message.error(message);
        });
    },
    getCaptcha() {
      captchaApi()
        .then(({ data }) => {
          this.captchatImg = data.captcha;
          this.loginForm.key = data.key;
        })
        .catch(({ message }) => {
          this.$message.error(message);
        });
    },
    checkCapslock(e) {
      const { key } = e;
      this.capsTooltip = key && key.length === 1 && key >= "A" && key <= "Z";
    },
    showPwd() {
      if (this.passwordType === "password") {
        this.passwordType = "";
      } else {
        this.passwordType = "password";
      }
      this.$nextTick(() => {
        this.$refs.password.focus();
      });
    },
    handleLogin() {
      this.$refs["loginForm"].validate(valid => {
        if (valid) {
          this.loading = true;
          this.$store
            .dispatch("user/login", this.loginForm)
            .then(res => {
              console.log(res);
              this.$router.push({
                path: this.redirect || "/",
                query: this.otherQuery
              });
              this.loading = false;
              this.$root.closeNotice();
              this.$root.notice = notice(res.token);
            })
            .catch(error => {
              this.loginForm.code = "";
              this.$message.error(error.message);
              this.loading = false;
              this.getCaptcha();
            });
        } else {
          console.log("error submit!!");
          return false;
        }
      });
    },
    getOtherQuery(query) {
      return Object.keys(query).reduce((acc, cur) => {
        if (cur !== "redirect") {
          acc[cur] = query[cur];
        }
        return acc;
      }, {});
    },
    handleResize(event) {
      this.fullWidth = document.body.clientWidth;
      if (this.fullWidth < 768) {
        document
          .getElementsByTagName("canvas")[0]
          .removeAttribute("class", "index_bg");
      } else {
        document.getElementsByTagName("canvas")[0].className = "index_bg";
      }
    }
  }
};
</script>

<style lang="scss" scoped>
$screen-md: 768px;
$font-size-base: 14px;
$animation-time: 0.3s;
$animation-time-quick: 0.15s;
$transition-time: 0.2s;
$ease-in-out: ease-in-out;
$subsidiary-color: #808695;
.page-account {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100vh;
  overflow: auto;
  .record_number{
    text-align: center;
    position: absolute;
    width: 100%;
    bottom: 30px;
    color: #ffffff;
    font-size: 13px;
    z-index: 300;
  }
  &-container {
    flex: 1;
    padding: 32px 0;
    text-align: center;
    width: 384px;
    margin: 0 auto;

    &-result {
      width: 100%;
    }
  }

  &-tabs {
    .ivu-tabs-bar {
      border-bottom: none;
    }
    .ivu-tabs-nav-scroll {
      text-align: center;
    }
    .ivu-tabs-nav {
      display: inline-block;
      float: none;
    }
  }
  &-top {
    padding: 32px 0;
    &-logo {
      img {
        max-height: 75px;
      }
    }
    &-desc {
      font-size: $font-size-base;
      color: $subsidiary-color;
    }
  }

  &-auto-login {
    margin-bottom: 24px;
    text-align: left;
    a {
      float: right;
    }
  }

  &-other {
    margin: 24px 0;
    text-align: left;
    span {
      font-size: $font-size-base;
    }
    img {
      width: 24px;
      margin-left: 16px;
      cursor: pointer;
      vertical-align: middle;
      opacity: 0.7;
      transition: all $transition-time $ease-in-out;
      &:hover {
        opacity: 1;
      }
    }
  }

  .ivu-poptip,
  .ivu-poptip-rel {
    display: block;
  }

  &-register {
    float: right;
    &-tip {
      text-align: left;
      &-title {
        font-size: $font-size-base;
      }
      &-desc {
        white-space: initial;
        font-size: $font-size-base;
        margin-top: 6px;
      }
    }
  }

  &-to-login {
    text-align: center;
    margin-top: 16px;
  }

  &-header {
    text-align: right;
    position: fixed;
    top: 16px;
    right: 24px;
  }
}
.labelPic {
  position: absolute;
  right: 0;
}
@media (min-width: $screen-md) {
  .page-account {
    background-image: url("../../assets/images/bg.jpg");
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
  }
  .page-account-container {
    padding: 32px 0 24px 0;
    position: relative;
  }
}
.page-account {
  display: flex;
}

.page-account .code {
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-account .code .pictrue {
  height: 40px;
}

.swiperPross {
  border-radius: 6px 0px 0px 6px;
  overflow: hidden;
}

.swiperPross,
.swiperPic,
.swiperPic img {
  width: 510px;
  height: 100%;
}

.swiperPic img {
  width: 100%;
  height: 100%;
}

.container {
  height: 400px !important;
  padding: 0 !important;
  /*overflow: hidden;*/
  border-radius: 6px;
  z-index: 1;
  display: flex;
}

.containerSamll {
  /*width: 56% !important;*/
  width: 904px;
  background: #fff !important;
}

.containerBig {
  width: auto !important;
  background: #f7f7f7 !important;
}

.index_from {
  padding: 0 40px 32px 40px;
  height: 400px;
  box-sizing: border-box;
}

.page-account-top {
  padding: 20px 0 !important;
  box-sizing: border-box !important;
  display: flex;
  justify-content: center;
}

.page-account-container {
  border-radius: 0px 6px 6px 0px;
}

.btn {
  background: linear-gradient(
    90deg,
    rgba(25, 180, 241, 1) 0%,
    rgba(14, 115, 232, 1) 100%
  ) !important;
}
</style>

<style lang="scss" scoped>
.captcha {
  display: flex;
  align-items: flex-start;
}
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;
.imgs {
  img {
    height: 36px;
  }
}
.login-form {
  position: relative;
  max-width: 100%;
  margin: 0 auto;
  overflow: hidden;
}
.tips {
  font-size: 14px;
  color: #fff;
  margin-bottom: 10px;

  span {
    &:first-of-type {
      margin-right: 16px;
    }
  }
}
.svg-container {
  padding: 6px 5px 6px 15px;
  color: $dark_gray;
  vertical-align: middle;
  width: 30px;
  display: inline-block;
}
.show-pwd {
  position: absolute;
  right: 10px;
  top: 7px;
  font-size: 16px;
  color: $dark_gray;
  cursor: pointer;
  user-select: none;
  /deep/.svg-icon {
    vertical-align: 0.3em;
  }
}
.thirdparty-button {
  position: absolute;
  right: 0;
  bottom: 6px;
}
</style>
